Layered ordered ultramicroporous material and synthesis method thereof

A synthesis method and ultra-microporous technology, applied in the directions of silicon dioxide, silicon oxide, etc., can solve the problem of difficulty in synthesizing layered ordered ultra-microporous materials, and achieve the effects of stable structure, easy control of conditions, and mild conditions.

Active Publication Date: 2018-12-21
JIANGXI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a layered ordered ultramicroporous material and its synthesis method, aiming to solve the technical problem that it is difficult to synthesize layered ordered ultramicroporous materials in the prior art

Method used

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  • Layered ordered ultramicroporous material and synthesis method thereof
  • Layered ordered ultramicroporous material and synthesis method thereof
  • Layered ordered ultramicroporous material and synthesis method thereof

Examples

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Embodiment 1

[0023] At 35°C, dissolve dehydroabietylamine (DHAA) and cetyltrimethylammonium bromide (CTAB) in deionized water, stir well, then add sodium hydroxide to adjust the pH value, under stirring conditions Add silicon source tetraethyl orthosilicate dropwise, wherein the molar ratio of silicon source tetraethyl orthosilicate, cetyltrimethylammonium bromide, dehydroabietylamine, and sodium hydroxide is 1:0.114:0.00286: 0.5, continue to stir for 2 h, then transfer to a hydrothermal reaction kettle, crystallize at 100°C for 72 h, wash, filter, and dry to obtain silica powder.

Embodiment 2

[0025] It is basically the same as Example 1, except that the molar ratio of the silicon source tetraethyl orthosilicate, cetyltrimethylammonium bromide, dehydroabietylamine, and sodium hydroxide is 1:0.114: 0.00457:0.5.

Embodiment 3

[0027] It is basically the same as Example 1, except that the molar ratio of the silicon source tetraethyl orthosilicate, cetyltrimethylammonium bromide, dehydroabietylamine, and sodium hydroxide is 1:0.114: 0.00714:0.5.

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Abstract

The invention belongs to the field of inorganic porous materials, and discloses a layered ordered ultramicroporous material and a synthetic method thereof. The method comprises the steps: dissolving acomposite template in deionized water at a certain temperature, adding an inorganic base to adjust the pH, dropping a silicon source under stirring, moving into a hydrothermal reaction kettle, allowing to stand for crystallization at a certain temperature for a period of time, and washing and drying to obtain a layered ordered ultramicroporous silica molecular sieve. The composite template is a mixture of cetyl trimethyl ammonium bromide and dehydroabietylamine. The synthesis method disclosed by the invention achieves the synthesis of layered ordered ultramicroporous silica. The raw materialsused in a synthesis process are natural and non-toxic, the resources are renewable, the cost is low, the synthesis method is simple, the conditions are mild and easy to control, and the prepared layered ordered ultramicroporous silica has a highly ordered pore structure with a pore size of about 2.0 nm, and can be widely used in the fields of adsorbents, catalysts, and drug controlled release.

Description

technical field [0001] The invention belongs to the field of inorganic porous materials, in particular to a layered ordered ultramicroporous material and a synthesis method thereof. Background technique [0002] At present, ordered ultramicroporous materials (1.2-2.7nm) with pore diameters between micropores and mesoporous critical areas have become ideal materials in the fields of chemical industry, medicine, petroleum, etc., effectively solving the problem of microporous materials with small pore diameters (< 1.2nm) will affect the mass transfer of macromolecular substrates, while mesoporous materials with too large pore size (2.7nm~12nm) are difficult to show the technical problem of shape-selective performance in catalytic reactions. However, due to the lack of suitable templates, the synthesis of ordered ultramicroporous materials is still a major challenge in the field of porous materials research. It is urgent to find suitable templates to guide the synthesis of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/18
CPCC01B33/18C01P2002/72C01P2004/03C01P2006/16
Inventor 王鹏邹秀秀陈尚钘范国荣王宗德廖圣良司红燕罗海
Owner JIANGXI AGRICULTURAL UNIVERSITY
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